1. Warriors approached the battlefield nude every now and then
2. Engineers with no arms in hand were instantly killed and banned from the battlefield by god himself
3. Several arrow, axes and spears sticking out of your body was no reason to stop fighting with full efficiency
4. Ramming a 3m pike through someones head was in no way lethal
5. Shields were high powered magnets back then.
6. Under some circumstanses a couched lance to the arm will kill you instantly, while a sword blow to the naked head can be survived
7. Horses feel no pain, they are either alive or dead
8. In medievil times men could only hold their breath for 20 seconds
9. A horseman in full armor riding a plated charger and carrying a crossbow can compete with a M1A2 battletank
10. Once arrived at the battleground there was only one strategic option available: charge straight forward